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Diffusion and osmosis
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Diffusion and osmosis Distinguish diffusion! Diffusion is about the movement of small particles like molecules and ions. Keep osmosis in order! Osmosis is about the movement of water through special membranes. 1. Diffusion * Particles in liquids and gases have kinetic energy. They move about, at speed, in all directions. * The particles move about randomly. In an area of high concentration, some of the particles collide with each other, lose energy and slow down. Others will escape from the concentrated area to places where there are fewer or none. Very few particles leave an area of low concentration to go to an area where the concentration is higher. * This creates a diffusion gradient - the result is that particles diffuse from an area of high concentration to an area of low concentration. Diagram Of Diffusion 2. Examples of diffusion Have a look at these examples of a diffusion gradient.You need to learn...
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